#!/bin/sh
# Start/stop/restart openvswitch.

# To start Open vSwitch automatically at boot, be sure this script is
# executable:
#
#   % chmod 755 /etc/rc.d/rc.openvswitch

# Before you can run Open vSwitch daemon, you must have a database.  To
# install an initial database, perform the following as root:
#
#   % modprobe openvswitch_mod
#   % ovsdb-tool create /etc/openvswitch/ovs-vswitchd.conf.db @DOCDIR@/schema/vswitch.ovsschema
#

# Module to make Open vSwitch compatible with Linux bridge utils:
BRCOMPAT=0

SOCKET=/var/run/openvswitch/db.sock
VSPID=/var/run/openvswitch/ovs-vswitchd.pid
DBPID=/var/run/openvswitch/ovsdb-server.pid

# Insert kernel driver for Open vSwitch:
/sbin/modprobe openvswitch_mod

# Insert kernel driver for VLANs:
/sbin/modprobe 8021q

# Insert kernel driver for bridge util compatibility:
if [ $BRCOMPAT -ne 0 ] ; then
  /sbin/modprobe brcompat_mod
fi

# Start openvswitch:
openvswitch_start() {
  echo "Starting openvswitch:  /etc/rc.d/rc.openvswitch"
  /usr/sbin/ovsdb-server /etc/openvswitch/ovs-vswitchd.conf.db --remote=punix:$SOCKET --detach --pidfile=$DBPID --verbose=ANY:ANY:err
  /usr/bin/ovs-vsctl --no-wait --verbose=ANY:ANY:err init
  /usr/sbin/ovs-vswitchd unix:$SOCKET --detach --pidfile=$VSPID --verbose=ANY:ANY:err
}

# Stop openvswitch:
openvswitch_stop() {
  echo "Stopping openvswitch:  /etc/rc.d/rc.openvswitch"
  if [ -e $VSPID ]; then
    pid=$(cat $VSPID)
    /usr/bin/ovs-appctl -t /var/run/openvswitch/ovs-vswitchd.$pid.ctl exit
  fi
  if [ -e $DBPID ]; then
    pid=$(cat $DBPID)
    /usr/bin/ovs-appctl -t /var/run/openvswitch/ovsdb-server.$pid.ctl exit
  fi
}

case "$1" in
'start')
  openvswitch_start
  ;;
'stop')
  openvswitch_stop
  ;;
'restart')
  openvswitch_stop
  sleep 1
  openvswitch_start
  ;;
*)
  echo "usage $0 start|stop|restart"
esac
